-- @testpoint: opengauss关键字Handler(非保留)，作为函数名，部分测试点合理报错

--关键字不带引号-成功
drop function if exists Handler;
create function Handler(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function if exists Handler;

--关键字带双引号-成功
drop function if exists "Handler";
create function "Handler"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function if exists "Handler";

--关键字带单引号-合理报错
drop function if exists 'Handler';
create function 'Handler'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/

--关键字带反引号-合理报错
drop function if exists `Handler`;
create function `Handler`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/